Camera optical lens

ABSTRACT

The present disclosure discloses a camera optical lens. The camera optical lens including, in an order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The camera optical lens further satisfies specific conditions.

FIELD OF THE PRESENT DISCLOSURE

The present disclosure relates to optical lens, in particular to a camera optical lens suitable for handheld devices such as smart phones and digital cameras and imaging devices.

DESCRIPTION OF RELATED ART

With the emergence of smart phones in recent years, the demand for miniature camera lens is increasing day by day, but the photosensitive devices of general camera lens are no other than Charge Coupled Device (CCD) or Complementary metal-Oxide Semiconductor Sensor (CMOS sensor), and as the progress of the semiconductor manufacturing technology makes the pixel size of the photosensitive devices shrink, coupled with the current development trend of electronic products being that their functions should be better and their shape should be thin and small, miniature camera lens with good imaging quality therefor has become a mainstream in the market. In order to obtain better imaging quality, the lens that is traditionally equipped in mobile phone cameras adopts a three-piece or four-piece lens structure. And, with the development of technology and the increase of the diverse demands of users, and under this circumstances that the pixel area of photosensitive devices is shrinking steadily and the requirement of the system for the imaging quality is improving constantly, the five-piece, six-piece and seven-piece lens structure gradually appear in lens design. There is an urgent need for ultra-thin wide-angle camera lenses which have good optical characteristics and the chromatic aberration of which is fully corrected.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the exemplary embodiments can be better understood with reference to the following drawings. The components in the drawing are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure.

FIG. 1 is a schematic diagram of a camera optical lens in accordance with a first embodiment of the present invention;

FIG. 2 shows the longitudinal aberration of the camera optical lens shown in FIG. 1;

FIG. 3 shows the lateral color of the camera optical lens shown in FIG. 1;

FIG. 4 presents a schematic diagram of the field curvature and distortion of the camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a camera optical lens in accordance with a second embodiment of the present invention;

FIG. 6 presents the longitudinal aberration of the camera optical lens shown in FIG. 5;

FIG. 7 presents the lateral color of the camera optical lens shown in FIG. 5;

FIG. 8 presents the field curvature and distortion of the camera optical lens shown in FIG. 5;

FIG. 9 is a schematic diagram of a camera optical lens in accordance with a third embodiment of the present invention;

FIG. 10 presents the longitudinal aberration of the camera optical lens shown in FIG. 9;

FIG. 11 presents the lateral color of the camera optical lens shown in FIG. 9;

FIG. 12 presents the field curvature and distortion of the camera optical lens shown in FIG. 9.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The present disclosure will hereinafter be described in detail with reference to several exemplary embodiments. To make the technical problems to be solved, technical solutions and beneficial effects of the present disclosure more apparent, the present disclosure is described in further detail together with the figure and the embodiments. It should be understood the specific embodiments described hereby is only to explain the disclosure, not intended to limit the disclosure.

Embodiment 1

As referring to FIG. 1, the present invention provides a camera optical lens 10. FIG. 1 shows the camera optical lens 10 of embodiment 1 of the present invention, the camera optical lens 10 comprises 7 lenses. Specifically, from the object side to the image side, the camera optical lens 10 comprises in sequence: an aperture S1, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7. Optical element like optical filter GF can be arranged between the seventh lens L7 and the image surface S1. The first lens L is made of plastic material, the second lens L2 is made of plastic material, the third lens L3 is made of plastic material, the fourth lens L4 is made of plastic material, the fifth lens L5 is made of glass material, the sixth lens L6 is made of glass material, the seventh lens L7 is made of plastic material;

Here, the focal length of the camera optical lens is f, the focal length of the first lens L1 is f1, curvature radius of object side surface of the first lens L1 is R1, the curvature radius of image side surface of the first lens L is R2, the refractive power of the fifth lens L5 is n4, the focal length of the sixth lens L6 is f6, the focal length of the seventh lens L7 is f7, the refractive power of the sixth lens L6 is n6, and they satisfy the following formula: −3≤f1/f≤−1, 1.7≤n5≤2.2, 1≤f6/f7≤10; 2≤(R1+R2)/(R1−R2)≤10; 1.7≤n6≤2.2.

Formula −3≤f1/f≤−1 fixes the negative refractive power of the first lens L1. If the upper limit of the set value is exceeded, although it benefits the ultra-thin development of lenses, but the negative refractive power of the first lens L will be too strong, problem like aberration is difficult to be corrected, and it is also unfavorable for wide-angle development of lens. On the contrary, if the lower limit of the set value is exceeded, the negative refractive power of the first lens L1 becomes too weak, it is then difficult to develop ultra-thin lenses. Preferably, the following formula shall be satisfied, −3≤f1/f≤−1.09.

Formula 1.7≤n5≤2.2 fixes the refractive power of the fifth lens L5, refractive power within this range benefits the ultra-thin development of lenses, and it also benefits the correction of aberration. Preferably, the following formula shall be satisfied, 1.73≤n5≤2.0.

Formula 1≤f6/f7≤10 fixes the ratio between the focal length f6 of the sixth lens L6 and the focal length f7 of the seventh lens L7, a ratio within this range can effectively reduce the sensitivity of lens group used in camera and further enhance the imaging quality. Preferably, the following formula shall be satisfied, 1.05≤f6/f7≤9.75.

Formula 2≤(R1+R2)/(R1−R2)≤10 fixes the shape of the first lens L1, when the value is beyond this range, with the development into the direction of ultra-thin and wide-angle lenses, problem like aberration of the off-axis picture angle is difficult to be corrected. Preferably, the condition 2.50≤(R1+R2)/(R1−R2)≤9.5 shall be satisfied.

Formula 1.7≤n6≤2.2 fixes the refractive power of the sixth lens L6, refractive power within this range benefits the ultra-thin development of lenses, and it also benefits the correction of aberration. Preferably, the following formula shall be satisfied, 1.71≤n6≤2.01.

When the focal length of the camera optical lens 10 of the present invention, the focal length of each lens, the refractive power of the related lens, and the total optical length, the thickness on-axis and the curvature radius of the camera optical lens satisfy the above formulas, the camera optical lens 10 has the advantage of high performance and satisfies the design requirement of low TTL.

In this embodiment, the object side surface of the first lens L1 is a convex surface relative to the proximal axis, its image side surface is a concave surface relative to the proximal axis, and it has negative refractive power; the focal length of the whole camera optical lens 10 is f, the focal length of the first lens L1 is f1, the thickness of the first lens L1 is d1: they satisfy the following condition: 0.11≤d1≤0.36, when the condition is meet, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.17≤d1≤0.29 shall be satisfied.

In this embodiment, the object side surface of the second lens L2 is a convex surface relative to the proximal axis, its image side surface is a concave surface relative to the proximal axis, and it has positive refractive power; the focal length of the whole camera optical lens 10 is f, the focal length of the second lens L2 is f2, the curvature radius of the object side surface of the second lens L2 is R3, the curvature radius of image side surface of the second lens L2 is R4 and the thickness on-axis of the second lens L2 is d3, they satisfy the following formula: 0.46≤f2/f≤1.65, when the formula is satisfied, the positive refractive power of the second lens L2 is controlled within reasonable scope, the spherical aberration caused by the first lens L which has negative refractive power and the field curvature of the system then can be reasonably and effectively balanced; the formula −3.01 (R3+R4)/(R3−R4)≤−0.73 fixes the shape of the second lens L2, when value is beyond this range, with the development into the direction of ultra-thin and wide-angle lenses, problem like on-axis chromatic aberration is difficult to be corrected; if the formula 0.22≤d3≤0.79 is satisfied, it is beneficial for the realization of ultra-thin lenses. Preferably, the following formulas shall be satisfied, 0.74≤f2/f≤1.32; −1.88≤(R3+R4)/(R3−R4)≤−0.91; 0.36≤d3≤0.63.

In this embodiment, the object side surface of the third lens L3 is a convex surface relative to the proximal axis, and it has a positive refractive power; the focal length of the whole camera optical lens 10 is f, the focal length of the third lens L3 is f3, the curvature radius of the object side surface of the third lens L3 is R5, the curvature radius of the image side surface of the third lens L3 is R6 and the thickness on-axis of the third lens L3 is d5, they satisfy the formula: 1.22≤f3/f≤4.55, by meeting this formula, it is helpful for the system to obtain good ability in balancing the field curvature, so that the image quality can be effectively improved; by meeting the formula −4.19≤(R5+R6)/(R5−R6)≤−0.14 the shape of the third lens L3 can be effectively controlled, it is beneficial for the shaping of the third lens L3 and bad shaping and stress generation due to extra large curvature of surface of the third lens L3 can be avoided; when the formula 0.17≤d5≤0.67 is satisfied, it is beneficial for the realization of ultra-thin lenses. Preferably, the following formulas shall be satisfied, 1.95≤f3/f≤3.64; −2.62≤(R5+R6)/(R5−R6)≤−0.17; 0.28≤d5≤0.54.

In this embodiment, the focal length of the whole camera optical lens of the fourth lens L4 is f, the focal length of the fourth lens L4 is f4, the curvature radius of the object side surface of the fourth lens L4 is R7, the curvature radius of the image side surface of the fourth lens L4 is R8 and the thickness on-axis of the fourth lens L4 is d7, they satisfy the formula: −19.24≤f4/f≤8.71, the appropriate distribution of refractive power makes it possible that the system has better imaging quality and lower sensitivity; the formula −48.25≤(R7+R8)/(R7−R8)≤10.78 fixes the shape of the fourth lens L4, when beyond this range, with the development into the direction of ultra-thin and wide-angle lens, the problem like chromatic aberration is difficult to be corrected; when the formula 0.14≤d7≤0.93 is satisfied, it is beneficial for realization of ultra-thin lenses. Preferably, the following formulas shall be satisfied, −12.03≤f4/f≤6.97; −30.16≤(R7+R8)/(R7−R8)≤8.62; 0.22≤d7≤0.74.

In this embodiment, the object side surface of the fifth lens L5 is a concave surface relative to the proximal axis, its image side surface is a convex surface relative to the proximal axis, and it has positive refractive power; the focal length of the whole camera optical lens 10 is f, the focal length of the fifth lens L5 is f5, the curvature radius of the object side surface of the fifth lens L5 is R9, the curvature radius of the image side surface of the fifth lens L5 is R10 and the thickness on-axis of the fifth lens L5 is d9, they satisfy the formula: 0.24≤f5/f4≤1.13, the limitation on the fifth lens L5 can effectively make the light angle of the camera lens flat and the tolerance sensitivity reduces; the formula 0.84≤(R9+R10)/(R9−R10)≤3.46 fixes the shape of the fifth lens L5, when beyond this range, with the development into the direction of ultra-thin and wide-angle lens, the problem like off-axis chromatic aberration is difficult to be corrected; when the formula 0.24≤d9≤0.95 is satisfied, it is beneficial for the realization of ultra-thin lens. Preferably, the following formulas shall be satisfied, 0.39≤f5/f≤0.91; 1.35≤(R9+R10)/(R9−R10)≤2.77; 0.38≤d9≤0.76.

In this embodiment, the object side surface of the sixth lens L6 is a convex surface relative to the proximal axis, its image side surface is a concave surface relative to the proximal axis, and it has negative refractive power; the focal length of the whole camera optical lens 10 is f, the focal length of the sixth lens L6 is f6, the curvature radius of the object side surface of the sixth lens L6 is R11, the curvature radius of the image side surface of the sixth lens L6 is R12 and the thickness on-axis of the sixth lens L6 is d11, they satisfy the formula: −14.16≤f6/f≤−0.65, the appropriate distribution of refractive power makes it possible that the system has better imaging quality and lower sensitivity; the formula 0.67≤(R11+R12)/(R11−R12)≤5.03 fixes the shape of the sixth lens L6, when beyond this range, with the development into the direction of ultra-thin and wide-angle lenses, the problem like off-axis chromatic aberration is difficult to be corrected; when the formula 0.19≤d11≤0.98, is satisfied, it is beneficial for the realization of ultra-thin lens. Preferably, the following formulas shall be satisfied, −8.85≤f6/f≤−0.82; 1.08≤(R11+R12)/(R11−R12)≤4.03; 0.30≤d11≤0.79.

In this embodiment, the object side surface of the seventh lens L7 is a convex surface relative to the proximal axis, its image side surface is a concave surface relative to the proximal axis, and it has negative refractive power; the focal length of the whole camera optical lens 10 is f, the focal length of the seventh lens L7 is f7, the curvature radius of the object side surface of the seventh lens L7 is R13, the curvature radius of the image side surface of the seventh lens L7 is R14 and the thickness on-axis of the seventh lens L7 is d13, they satisfy the formula: 0.92≤(R13+R14)/(R13−R14)≤4.74, which fixes the shape of the seventh lens L7, when beyond this range, with the development into the direction of ultra-thin and wide-angle lenses, the problem like off-axis chromatic aberration is difficult to be corrected; when the formula −1.78≤f7/f≤−0.50 is satisfied, appropriate distribution of refractive power makes it possible that the system has better imaging quality and lower sensitivity; when the formula 0.13≤d13≤0.47 is satisfied, it is beneficial for the realization of ultra-thin lens. Preferably, the following formulas shall be satisfied, −1.11≤f7/f≤−0.62; 0.21≤d13≤0.37; 1.48≤(R13+R14)/(R13−R14)≤3.79.

In this embodiment, the total optical length TTL of the camera optical lens 10 is less than or equal to 6.44 mm, it is beneficial for the realization of ultra-thin lenses. Preferably, the total optical length TTL of the camera optical lens 10 is less than or equal to 6.15.

In this embodiment, the aperture F number of the camera optical lens is less than or equal to 2.25. A large aperture has better imaging performance. Preferably, the aperture F number of the camera optical lens 10 is less than or equal to 2.20.

With such design, the total optical length TTL of the whole camera optical lens 10 can be made as short as possible, thus the miniaturization characteristics can be maintained.

In the following, an example will be used to describe the camera optical lens 10 of the present invention. The symbols recorded in each example are as follows. The unit of distance, radius and center thickness is mm.

TTL: Optical length (the distance on-axis from the object side surface to the image side surface of the first lens L).

Preferably, inflexion points and/or arrest points can also be arranged on the object side surface and/or image side surface of the lens, so that the demand for high quality imaging can be satisfied, the description below can be referred for specific implementable scheme.

The design information of the camera optical lens 10 in the first embodiment of the present invention is shown in the following, the unit of the focal length, distance, radius and center thickness is mm.

The design information of the camera optical lens 10 in the first embodiment of the present invention is shown in the tables 1 and 2.

TABLE 1 R d nd vd S1 ∞   d0 = −0.050 R1 1.927 d1 = 0.240 nd1 1.6509 v 1 21.52 R2 1.376 d2 = 0.105 R3 2.194 d3 = 0.445 nd2 1.5352 v 2 56.09 R4 49.360 d4 = 0.065 R5 5.653 d5 = 0.447 nd3 1.5352 v 3 56.09 R6 123.737 d6 = 0.550 R7 7.435 d7 = 0.338 nd4 1.6613 v 4 20.37 R8 5.618 d8 = 0.715 R9 −4.483 d9 = 0.550 nd5 1.7550 v 5 51.16 R10 −1.144 d10 = 0.030  R11 15.350 d11 = 0.421  nd6 1.7130 v 6 53.94 R12 2.278 d12 = 0.035  R13 1.851 d13 = 0.260  nd7 1.6509 v 7 21.52 R14 0.961 d14 = 0.631  R15 ∞ d15 = 0.210  ndg 1.5168 v g 64.17 R16 ∞ d16 = 0.500  In which, the meaning of the various symbols is as follows. S1: Aperture; R: The curvature radius of the optical surface, the central curvature radius in case of lens; R1: The curvature radius of the object side surface of the first lens L1; R2: The curvature radius of the image side surface of the first lens L1; R3: The curvature radius of the object side surface of the second lens L2; R4: The curvature radius of the image side surface of the second lens L2; R5: The curvature radius of the object side surface of the third lens L3; R6: The curvature radius of the image side surface of the third lens L3; R7: The curvature radius of the object side surface of the fourth lens L4; R8: The curvature radius of the image side surface of the fourth lens L4; R9: The curvature radius of the object side surface of the fifth lens L5; R10: The curvature radius of the image side surface of the fifth lens L5; R11: The curvature radius of the object side surface of the sixth lens L6; R12: The curvature radius of the image side surface of the sixth lens L6; R13: The curvature radius of the object side surface of the seventh lens L7; R14: The curvature radius of the image side surface of the seventh lens L7; R15: The curvature radius of the object side surface of the optical filter GF; R16: The curvature radius of the image side surface of the optical filter GF; d: The thickness on-axis of the lens and the distance on-axis between the lens; d0: The distance on-axis from aperture S1 to the object side surface of the first lens L1; d1: The thickness on-axis of the first lens L1; d2: The distance on-axis from the image side surface of the first lens L1 to the object side surface of the second lens L2; d3: The thickness on-axis of the second lens L2; d4: The distance on-axis from the image side surface of the second lens L2 to the object side surface of the third lens L3; d5: The thickness on-axis of the third lens L3; d6: The distance on-axis from the image side surface of the third lens L3 to the object side surface of the fourth lens L4; d7: The thickness on-axis of the fourth lens L4; d8: The distance on-axis from the image side surface of the fourth lens L4 to the object side surface of the fifth lens L5; d9: The thickness on-axis of the fifth lens L5; d10: The distance on-axis from the image side surface of the fifth lens L5 to the object side surface of the sixth lens L6; d11: The thickness on-axis of the sixth lens L6; d12: The distance on-axis from the image side surface of the sixth lens L6 to the object side surface of the seventh lens L7; d13: The thickness on-axis of the seventh lens L7; d14: The distance on-axis from the image side surface of the seventh lens L7 to the object side surface of the optical filter GF; d15: The thickness on-axis of the optical filter GF; d16: The distance on-axis from the image side surface to the image surface of the optical filter GF; nd: The refractive power of the d line; nd1: The refractive power of the d line of the first lens L1; nd2: The refractive power of the d line of the second lens L2; nd3: The refractive power of the d line of the third lens L3; nd4: The refractive power of the d line of the fourth lens L4; nd5: The refractive power of the d line of the fifth lens L5; nd6: The refractive power of the d line of the sixth lens L6; nd7: The refractive power of the d line of the seventh lens L7; ndg: The refractive power of the d line of the optical filter GF; vd: The abbe number; v1: The abbe number of the first lens L1; v2: The abbe number of the second lens L2; v3: The abbe number of the third lens L3; v4: The abbe number of the fourth lens L4; v5: The abbe number of the fifth lens L5; v6: The abbe number of the sixth lens L6; v7: The abbe number of the seventh lens L7; vg: The abbe number of the optical filter GF;

Table 2 shows the aspherical surface data of the camera optical lens in the embodiment 1 of the present invention.

TABLE 2 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16 R1 −4.9762E+00 −5.4303E−02 2.7695E−02 −8.3776E−03 −3.8497E−02 4.1075E−02 −1.1648E−02 −1.2306E−03 R2 −4.5743E+00 −1.7983E−02 −1.1994E−02 2.5494E−03 −5.0731E−03 −1.2850E−02 1.1156E−02 −7.7925E−04 R3 −2.2881E+00 −5.2868E−02 2.2645E−02 9.0644E−03 −1.6596E−02 −1.3172E−03 5.2599E−03 −1.6833E−03 R4 0.0000E+00 −4.9767E−02 3.8652E−02 −8.9659E−03 1.8652E−02 −4.2804E−03 −9.0805E−03 1.8924E−03 R5 0.0000E+00 −3.7597E−02 2.1437E−02 6.2047E−03 −2.8724E−03 −1.5115E−03 4.6481E−04 −3.0227E−04 R6 0.0000E+00 −5.3288E−02 4.8968E−03 −8.1737E−03 4.4732E−03 1.0588E−03 3.4608E−04 −3.3823E−04 R7 0.0000E+00 −1.2145E−01 9.3871E−03 −8.5841E−03 1.0844E−02 −1.0883E−03 1.1769E−04 −3.4582E−04 R8 0.0000E+00 −1.0028E−01 1.4217E−02 −2.9110E−03 1.8996E−03 1.1020E−03 −5.9001E−04 −3.7861E−07 R9 5.9640E+00 −6.4180E−03 2.2407E−02 −4.9794E−03 4.2650E−04 −1.0068E−05 3.9273E−05 −1.5503E−05 R10 −4.7161E+00 −5.3814E−02 3.4261E−02 −3.3424E−03 −4.0968E−04 −5.9810E−06 2.0109E−05 −2.0365E−06 R11 0.0000E+00 −1.9200E−02 1.5000E−03 −1.4438E−04 −3.1403E−05 −2.2202E−05 1.3774E−05 −1.5472E−06 R12 −1.7700E+01 −3.6037E−03 −3.0345E−03 1.5115E−04 1.1278E−05 −7.3261E−06 3.8923E−07 1.6433E−08 R13 −8.3552E+00 −2.4869E−02 1.9648E−04 2.7342E−04 −4.6767E−06 −1.0864E−06 −3.4403E−07 3.0368E−08 R14 −4.7700E+00 −3.4644E−02 4.8158E−03 −2.8197E−04 6.3579E−06 9.9924E−07 −1.6583E−07 −6.9356E−11

Among them, K is a conic index, A4, A6, A8, A10, A12, A14, A16 are aspheric surface indexes.

IH: Image height y=(x ² /R)/[1+{(1−(k+1)(x ² /R ²)}^(1/2) ]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰ +A12x ¹² +A14x ¹⁴ +A16x ¹⁶  (1)

For convenience, the aspheric surface of each lens surface uses the aspheric surfaces shown in the above condition (1). However, the present invention is not limited to the aspherical polynomials form shown in the condition (1).

Table 3 and table 4 show the inflexion points and the arrest point design data of the camera optical lens 10 lens in embodiment 1 of the present invention. In which, R1 and R2 represent respectively the object side surface and image side surface of the first lens L1, R3 and R4 represent respectively the object side surface and image side surface of the second lens L2, R5 and R6 represent respectively the object side surface and image side surface of the third lens L3, R7 and R8 represent respectively the object side surface and image side surface of the fourth lens L4, R9 and R10 represent respectively the object side surface and image side surface of the fifth lens L5, R11 and R12 represent respectively the object side surface and image side surface of the sixth lens L6, R13 and R14 represent respectively the object side surface and image side surface of the seventh lens L7. The data in the column named “inflexion point position” are the vertical distances from the inflexion points arranged on each lens surface to the optic axis of the camera optical lens 10. The data in the column named “arrest point position” are the vertical distances from the arrest points arranged on each lens surface to the optic axis of the camera optical lens 10.

TABLE 3 Inflexion point Inflexion point Inflexion point Inflexion point number position 1 position 2 position 3 R1 1 0.725 R2 1 0.735 R3 1 0.915 R4 3 0.195 0.695 1.005 R5 1 1.135 R6 2 0.115 1.175 R7 1 0.315 R8 1 0.405 R9 0 R10 1 0.975 R11 1 0.555 R12 1 0.845 R13 1 0.755 R14 1 0.735

TABLE 4 Arrest point Arrest point Arrest point Arrest point number position 1 position 2 position 3 R1 0 R2 0 R3 0 R4 3 0.345 0.865 1.065 R5 0 R6 1 0.195 R7 1 0.535 R8 1 0.705 R9 0 R10 0 R11 1 0.965 R12 1 1.615 R13 1 1.595

FIG. 2 and FIG. 3 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 470 nm, 555 nm and 650 nm passes the camera optical lens 10 in the first embodiment. FIG. 4 shows the field curvature and distortion schematic diagrams after light with a wavelength of 546.1 nm passes the camera optical lens 10 in the first embodiment, the field curvature S in FIG. 4 is a field curvature in the sagittal direction, T is a field curvature in the meridian direction.

Table 13 shows the various values of the examples 1, 2, 3 and the values corresponding with the parameters which are already specified in the condition expressions.

As shown in Table 13, the first embodiment satisfies the various condition expressions.

In this embodiment, the pupil entering diameter of the camera optical lens is 1.817 mm, the full vision field image height is 2.994 mm, the vision field angle in the diagonal direction is 74.79°, it has wide-angle and is ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

Embodiment 2

Embodiment 2 is basically the same as embodiment 1, the meaning of its symbols is the same as that of embodiment 1, in the following, only the differences are described.

Table 5 and table 6 show the design data of the camera optical lens in embodiment 2 of the present invention.

TABLE 5 R d nd v d S1 ∞   d0 = −0.095 R1 1.272 d1 = 0.210 nd1 1.6613 v 1 20.37 R2 1.020 d2 = 0.127 R3 1.656 d3 = 0.526 nd2 1.5352 v 2 56.09 R4 8.203 d4 = 0.190 R5 4.152 d5 = 0.403 nd3 1.5352 v 3 56.09 R6 11.745 d6 = 0.388 R7 −4.651 d7 = 0.618 nd4 1.6509 v 4 21.52 R8 −13.508 d8 = 0.343 R9 −3.796 d9 = 0.630 nd5 1.7725 v 5 49.46 R10 −1.286 d10 = 0.030  R11 5.838 d11 = 0.370  nd6 1.7130 v 6 53.94 R12 3.158 d12 = 0.050  R13 1.882 d13 = 0.270  nd7 1.6509 v 7 21.52 R14 0.926 d14 = 0.666  R15 ∞ d15 = 0.210  ndg 1.5168 v g 64.17 R16 ∞ d16 = 0.500 

Table 6 shows the aspherical surface data of each lens of the camera optical lens 20 in embodiment 2 of the present invention.

TABLE 6 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16 R1 −2.0110E+00 −3.4846E−02 6.1118E−03 −6.3851E−03 −4.9377E−02 4.8331E−02 −1.8210E−02 −4.0592E−03 R2 −2.4384E+00 1.3157E−02 −5.4838E−02 9.7285E−03 −8.2531E−04 −3.3150E−02 8.9040E−04 5.9411E−03 R3 −1.2670E+00 −3.8009E−02 9.6767E−03 4.1120E−02 −1.2914E−02 8.7195E−03 3.0925E−03 −3.1778E−03 R4 −5.6457E+01 −7.1999E−02 4.4607E−02 3.5786E−03 6.4874E−02 −1.0487E−02 4.3088E−03 8.2435E−03 R5 −1.4177E+01 −6.8609E−02 −1.9332E−02 6.0968E−02 2.2513E−03 −6.4341E−03 −3.3531E−03 −2.4898E−03 R6 −2.0923E+02 −6.9992E−02 −3.3926E−02 3.3659E−03 1.7457E−02 6.4381E−03 −1.0979E−02 2.5308E−03 R7 9.1671E+00 −1.0694E−01 −2.0808E−02 3.1826E−03 −5.1504E−03 2.0112E−03 6.5453E−03 9.3255E−04 R8 1.0957E+01 −7.9089E−02 2.8167E−02 −1.1953E−02 2.3005E−03 6.2049E−05 −5.3304E−04 2.2983E−04 R9 1.6442E+00 4.0244E−03 2.0963E−02 −5.6175E−03 −2.6510E−04 −2.8391E−04 2.3946E−05 2.8978E−05 R10 −5.1269E+00 −5.4797E−02 3.5895E−02 −4.5087E−03 −4.7181E−04 2.3938E−05 1.6452E−05 5.7112E−06 R11 0.0000E+00 −2.8163E−02 1.2776E−03 3.3348E−04 1.7901E−05 −7.2135E−06 −1.9323E−07 7.8138E−08 R12 −4.4057E+00 −1.5270E−02 −2.3201E−03 5.8654E−04 −8.2371E−05 −6.9729E−07 4.0602E−07 8.4583E−08 R13 −5.1648E+00 −3.9461E−02 3.4321E−03 −2.4467E−04 2.7461E−05 4.7302E−06 −8.4506E−07 −2.0212E−09 R14 −4.4420E+00 −3.7972E−02 3.9227E−03 4.5887E−05 −8.2628E−06 −3.2985E−06 4.6085E−07 −2.8198E−08

Table 7 and table 8 show the inflexion points and the arrest point design data of the camera optical lens 20 lens in the second embodiment of the present invention.

TABLE 7 Inflexion point Inflexion point Inflexion point number position 1 position 2 R1 1 0.765 R2 1 0.725 R3 0 R4 2 0.415 0.555 R5 2 0.495 0.725 R6 1 0.285 R7 0 R8 0 R9 0 R10 1 0.995 R11 2 0.755 1.795 R12 1 0.965 R13 1 0.765 R14 1 0.725

TABLE 8 Arrest point Arrest point Arrest point number position 1 position 2 R1 0 R2 0 R3 0 R4 0 R5 0 R6 1 0.475 R7 0 R8 0 R9 0 R10 0 R11 2 1.435 2.055 R12 1 1.675 R13 1 1.535 R14 1 2.255

FIG. 6 and FIG. 7 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 470 nm, 555 nm and 650 nm passes the camera optical lens 20 in the second embodiment. FIG. 8 shows the field curvature and distortion schematic diagrams after light with a wavelength of 546.1 nm passes the camera optical lens 20 in the second embodiment.

As shown in Table 13, the second embodiment satisfies the various condition expressions.

In this embodiment, the pupil entering diameter of the camera optical lens is 1.777 mm, the full vision field image height is 2.994 mm, the vision field angle in the diagonal direction is 74.79°, it has wide-angle and is ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

Embodiment 3

Embodiment 3 is basically the same as embodiment 1, the meaning of its symbols is the same as that of embodiment 1, in the following, only the differences are described.

The design information of the camera optical lens 30 in the third embodiment of the present invention is shown in the tables 9 and 10.

TABLE 9 R d nd v d S1 ∞ d0 = 0.000 R1 2.741 d1 = 0.240 nd1 1.6355 v 1 23.97 R2 1.372 d2 = 0.040 R3 1.794 d3 = 0.488 nd2 1.5352 v 2 56.09 R4 19.718 d4 = 0.253 R5 8.480 d5 = 0.347 nd3 1.5352 v 3 56.09 R6 −12.965 d6 = 0.085 R7 1.986 d7 = 0.273 nd4 1.6613 v 4 20.37 R8 2.158 d8 = 1.296 R9 −3.991 d9 = 0.481 nd5 1.8014 v 5 45.45 R10 −1.576 d10 = 0.030  R11 21.414 d11 = 0.656  nd6 1.8208 v 6 42.71 R12 10.929 d12 = 0.080  R13 4.434 d13 = 0.310  nd7 1.6613 v 7 20.37 R14 1.320 d14 = 0.565  R15 ∞ d15 = 0.210  ndg 1.5168 v g 64.17 R16 ∞ d16 = 0.500 

Table 10 shows the aspherical surface data of each lens of the camera optical lens 30 in embodiment 3 of the present invention.

TABLE 10 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16 R1 −1.0675E+01 −8.1348E−02 −4.9425E−03 3.3314E−02 −2.5937E−02 −2.4695E−03 3.7474E−03 3.7747E−03 R2 −4.5634E+00 −7.3041E−02 −2.1009E−02 3.0361E−02 3.5036E−03 −7.6829E−03 −2.8630E−03 2.6039E−03 R3 7.0203E−02 −1.5133E−01 6.5119E−02 4.8652E−03 −5.1678E−03 9.0685E−03 −1.9423E−03 −2.5723E−03 R4 −7.6619E+02 −7.6891E−02 4.3911E−02 7.3413E−03 7.3202E−03 −1.2576E−02 −3.8060E−03 5.3750E−03 R5 1.7843E+01 −2.5781E−02 −1.1569E−03 −1.7737E−03 −4.6708E−03 −4.1102E−03 −2.7997E−03 −2.5102E−03 R6 0.0000E+00 −2.3483E−02 2.9647E−02 −1.2545E−02 −4.7531E−03 −3.6828E−03 −2.3390E−03 1.1132E−03 R7 2.7073E−01 −1.1724E−01 3.1481E−02 −1.2904E−02 5.6516E−03 −2.4724E−03 5.1622E−04 −6.5151E−04 R8 1.3794E−01 −8.8820E−02 −1.0322E−03 1.3535E−03 3.0991E−03 −6.1489E−04 −1.1650E−03 1.2088E−05 R9 5.0579E+00 1.7483E−02 2.1771E−02 −5.2671E−03 −3.1520E−04 6.7323E−05 6.2059E−05 −1.0721E−05 R10 −4.6938E+00 −3.2531E−02 3.4568E−02 −4.1405E−03 −6.5404E−04 3.9371E−06 −8.7197E−06 3.5125E−06 R11 7.5091E+01 −1.7645E−02 2.6635E−03 2.2518E−04 1.3997E−05 −3.3722E−05 3.4502E−06 −1.0052E−07 R12 −9.8827E−01 −1.5400E−02 −2.8571E−03 1.5915E−04 −2.0456E−05 3.2446E−06 −9.7227E−07 1.3585E−07 R13 −1.0980E+01 −3.5408E−02 −1.0212E−03 2.2269E−04 −1.0249E−06 −2.5395E−06 3.0164E−07 5.9608E−08 R14 −4.5589E+00 −3.6781E−02 5.6040E−03 −3.3407E−04 −3.4972E−07 8.5257E−07 −2.2264E−08 −5.8910E−09

Table 11 and table 12 show the inflexion points and the arrest point design data of the camera optical lens 30 lens in embodiment 3 of the present invention.

TABLE 11 Inflexion point Inflexion point Inflexion point Inflexion point number position 1 position 2 position 3 R1 1 0.515 R2 1 0.615 R3 0 R4 2 0.235 0.795 R5 1 0.615 R6 0 R7 1 0.885 R8 1 0.755 R9 2 0.905 1.165 R10 2 0.895 1.545 R11 3 0.515 1.435 1.705 R12 1 0.655 R13 1 0.635 R14 1 0.805

TABLE 12 Arrest point Arrest point Arrest point number position 1 position 2 R1 0 R2 0 R3 0 R4 2 0.415 1.005 R5 1 0.875 R6 0 R7 0 R8 0 R9 0 R10 0 R11 1 0.965 R12 1 1.075 R13 1 1.105 R14 1 2.395

FIG. 10 and FIG. 11 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 470 nm, 555 nm and 650 nm passes the camera optical lens 30 in the third embodiment. FIG. 12 shows the field curvature and distortion schematic diagrams after light with a wavelength of 546.1 nm passes the camera optical lens 30 in the third embodiment.

The following table 13, in accordance with the above condition expressions, lists the values in this embodiment corresponding with each condition expression. Apparently, the camera optical system of this embodiment satisfies the above condition expressions.

In this embodiment, the pupil entering diameter of the camera optical lens is 1.806 mm, the full vision field image height is 2.994 mm, the vision field angle in the diagonal direction is 74.75°, it has wide-angle and is ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

TABLE 13 Embodiment Embodiment Embodiment 1 2 3 f 3.871 3.874 3.937 f1 −8.872 −11.586 −4.603 f2 4.262 3.757 3.641 f3 11.017 11.743 9.602 f4 −37.244 −11.113 22.863 f5 1.892 2.260 2.974 f6 −3.791 −10.202 −27.869 f7 −3.446 −3.130 −2.934 f6/f7 1.100 3.259 9.500 (R1 + R2)/(R1 − R2) 6.000 9.100 3.003 (R3 + R4)/(R3 − R4) −1.093 −1.506 −1.200 (R5 + R6)/(R5 − R6) −1.096 −2.094 −0.209 (R7 + R8)/(R7 − R8) 7.186 −2.050 −24.126 (R9 + R10)/(R9 − R10) 1.685 2.024 2.305 (R11 + R12)/(R11 − R12) 1.349 3.356 3.085 (R13 + R14)/(R13 − R14) 3.160 2.939 1.848 f1/f −2.292 −2.990 −1.169 f2/f 1.101 0.970 0.925 f3/f 2.846 3.031 2.439 f4/f −9.621 −2.868 5.807 f5/f 0.489 0.583 0.755 f6/f −0.979 −2.633 −7.078 f7/f −0.890 −0.808 −0.745 d1 0.240 0.210 0.240 d3 0.445 0.526 0.488 d5 0.447 0.403 0.347 d7 0.338 0.618 0.273 d9 0.550 0.630 0.481 d11 0.421 0.370 0.656 d13 0.260 0.270 0.310 Fno 2.130 2.180 2.180 TTL 5.542 5.532 5.853 d7/TTL 0.061 0.112 0.047 n1 1.6509 1.6613 1.6355 n2 1.5352 1.5352 1.5352 n3 1.5352 1.5352 1.5352 n4 1.6613 1.6509 1.6613 n5 1.7550 1.7725 1.8014 n6 1.7130 1.7130 1.8208 n7 1.6509 1.6509 1.6613

FIG. 10 and FIG. 11 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 470 nm, 555 nm and 650 nm passes the camera optical lens 30 in the third embodiment. FIG. 12 shows the field curvature and distortion schematic diagrams after light with a wavelength of 546.1 nm passes the camera optical lens 30 in the third embodiment.

The following table 13, in accordance with the above conditions, lists the values in this embodiment corresponding with each condition expression. Apparently, the camera optical system of this embodiment satisfies the above conditions.

In this embodiment, the pupil entering diameter of the camera optical lens is 1.824 mm, the full vision field image height is 2.994 m, the vision field angle in the diagonal direction is 74.45°, it has wide-angle and is ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

TABLE 13 Embodiment Embodiment Embodiment 1 2 3 f 3.884 3.891 3.922 f1 −8.930 −11.637 −4.535 f2 4.278 3.705 3.767 f3 11.432 13.130 9.580 f4 −39.042 −12.271 18.770 f5 1.954 2.117 2.860 f6 −4.046 −8.677 −28.195 f7 −3.682 −2.892 −2.968 f6/f7 1.099 3.000 9.500 (R1 + R2)/(R1 − R2) 6.000 9.000 2.895 (R3 + R4)/(R3 − R4) −1.168 −1.447 −1.287 (R5 + R6)/(R5 − R6) −1.225 −3.030 −0.444 (R7 + R8)/(R7 − R8) 7.836 −2.903 −33.107 (R9 + R10)/(R9 − R10) 1.691 1.873 2.248 (R11 + R12)/(R11 − R12) 1.119 2.137 2.183 (R13 + R14)/(R13 − R14) 3.579 2.648 1.953 f1/f −2.299 −2.991 −1.156 f2/f 1.101 0.952 0.960 f3/f 2.943 3.374 2.443 f4/f −10.051 −3.154 4.786 f5/f 0.503 0.544 0.729 f6/f −1.042 −2.230 −7.189 f7/f −0.948 −0.743 −0.757 d1 0.245 0.210 0.240 d3 0.439 0.549 0.519 d5 0.466 0.315 0.315 d7 0.292 0.559 0.257 d9 0.550 0.550 0.494 d11 0.397 0.356 0.569 d13 0.245 0.250 0.300 Fno 2.150 2.180 2.150 TTL 5.532 5.362 5.756 d7/TTL 0.053 0.104 0.045 n1 1.6509 1.6509 1.6355 n2 1.5352 1.5352 1.5352 n3 1.5352 1.5352 1.5352 n4 1.9229 1.8211 1.9229 n5 1.7130 1.7290 1.8014 n6 1.5346 1.5352 1.5346 n7 1.6509 1.6509 1.6613

It is to be understood, however, that even though numerous characteristics and advantages of the present exemplary embodiments have been set forth in the foregoing description, together with details of the structures and functions of the embodiments, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms where the appended claims are expressed. 

What is claimed is:
 1. A camera optical lens comprising, from an object side to an image side in sequence: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens; the camera optical lens further satisfies the following conditions: −3≤f1/f≤−1; 1.7≤n5≤2.2; 1≤f6/f7≤10; 2≤(R1+R2)/(R1−R2)≤10; 1.7≤n6≤2.2; where f: the focal length of the camera optical lens; f1: the focal length of the first lens; f6: the focal length of the sixth lens; f7: the focal length of the seventh lens; n6: the refractive power of the sixth lens; n5: the refractive power of the fifth lens; R1: curvature radius of object side surface of the first lens; R2: the curvature radius of image side surface of the first lens.
 2. The camera optical lens as described in claim 1, wherein the first lens is made of plastic material, the second lens is made of plastic material, the third lens is made of plastic material, the fourth lens is made of plastic material, the fifth lens is made of glass material, the sixth lens is made of glass material, the seventh lens is made of plastic material.
 3. The camera optical lens as described in claim 1, wherein first lens has a negative refractive power with a convex object side surface and a concave image side surface; the camera optical lens further satisfies the following conditions: 0.11≤d1≤0.36; where d1: the thickness on-axis of the first lens.
 4. The camera optical lens as described in claim 1, wherein the second lens has a positive refractive power with a convex object side surface and a concave image side surface; the camera optical lens further satisfies the following conditions: 0.46≤f2/f≤1.65; −3.01≤(R3+R4)/(R3−R4)≤−0.73; 0.22≤d3≤0.79; where f: the focal length of the camera optical lens; f2: the focal length of the second lens; R3: the curvature radius of the object side surface of the second lens; R4: the curvature radius of the image side surface of the second lens; d3: the thickness on-axis of the second lens.
 5. The camera optical lens as described in claim 1, wherein the third lens has a positive refractive power with a convex object side surface; wherein the camera optical lens further satisfies the following conditions: 1.22≤f3/f≤4.55; −4.19≤(R5+R6)/(R5−R6)≤−0.14; 0.17≤d5≤0.67; where f: the focal length of the camera optical lens; f3: the focal length of the third lens; R5: the curvature radius of the object side surface of the third lens; R6: the curvature radius of the image side surface of the third lens; d5: the thickness on-axis of the third lens.
 6. The camera optical lens as described in claim 1 further satisfying the following conditions: −19.24≤f4/f≤8.71; −48.25≤(R7+R8)/(R7−R8)≤10.78; 0.14≤d7≤0.93; where f: the focal length of the camera optical lens; f4: the focal length of the fourth lens; R7: the curvature radius of the object side surface of the fourth lens; R8: the curvature radius of the image side surface of the fourth lens; d7: the thickness on-axis of the fourth lens.
 7. The camera optical lens as described in claim 1, wherein the fifth lens has a positive refractive power with a concave object side surface and a convex image side surface; the camera optical lens further satisfies the following conditions: 0.24≤f5/f≤1.13; 0.84≤(R9+R10)/(R9−R10)≤3.46; 0.24≤d9≤0.95; where f: the focal length of the camera optical lens; f5: the focal length of the fifth lens; R9: the curvature radius of the object side surface of the fifth lens; R10: the curvature radius of the image side surface of the fifth lens; d9: the thickness on-axis of the fifth lens.
 8. The camera optical lens as described in claim 1, wherein the sixth lens has a negative refractive power with a convex object side surface and a concave image side surface; the camera optical lens further satisfies the following conditions: −14.16≤f6/f≤−0.65; 0.67≤(R11+R12)/(R11−R12)≤5.03; 0.19≤d11≤0.98; where f: the focal length of the camera optical lens; f6: the focal length of the sixth lens; R11: the curvature radius of the object side surface of the sixth lens; R12: the curvature radius of the image side surface of the sixth lens; d11: the thickness on-axis of the sixth lens.
 9. The camera optical lens as described in claim 1, wherein the seventh lens has a negative refractive power with a convex object side surface and a concave image side surface; the camera optical lens further satisfies the following conditions: 0.92≤(R13+R14)/(R13−R14)≤4.74; −1.78≤f7/f≤−0.50; 0.13≤d13≤0.47; where R13: the curvature radius of the object side surface of the seventh lens; R14: the curvature radius of the image side surface of the seventh lens; f: the focal length of the camera optical lens; f7: the focal length of the seventh lens; d13: the thickness on-axis of the seventh lens.
 10. The camera optical lens as described in claim 1, wherein the total optical length TTL of the camera optical lens is less than or equal to 6.44 mm.
 11. The camera optical lens as described in claim 1, wherein the aperture F number of the camera optical lens is less than or equal to 2.25. 